The USDA finalized a rule revoking maximum line speeds at slaughterhouses for pigs, calling the move a “modernization” and that the new rule would “improve animal welfare . . . because more FSIS resources will be available to verify the humane handling of animals.” Under the new rule, a maximum line speed may be established on a case-by-case basis as directed by the Inspector-In-Charge at that plant when, in the Inspector’s judgment, “a carcass-by-carcass inspection cannot be adequately performed.”